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TROUBLESHOOTING & REPAIR | ||||||
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| Observe all Safety Guidelines detailed throughout this manual |
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PROBLEMS |
| POSSIBLE AREAS OF |
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(SYMPTOMS) |
| MISADJUSTMENT(S) |
| COURSE OF ACTION | ||
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| OUTPUT PROBLEMS |
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Major Physical or | Electrical | Contact the Lincoln Electric |
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Damage is Evident. |
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| Service Dept. (216) |
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The Machine is dead - The Input | 1. Check for blown or missing | 1. | The.Start/Stop button (S1) | |||
contactor does not | operate. |
| fuses in input lines. |
| may be faulty- Check for prop- | |
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| er operation. See wiring dia- | |
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| 2. | Check the |
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| line voltage at the machine. |
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| The input voltage must match | 2. | The Control Transformer (T2) | |
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| the rating plate and reconnect |
| may be faulty. Perform the | |
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| panel. |
| Control Transformer Test. | |
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| 3. | The primary or secondary | |
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| thermostats may be open. | |
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| Check or replace. Also check | |
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| the associated wiring. See | |
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| wiring diagram. | |
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| 4. | The pilot relay (2CR) may be | |
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| faulty. Check or replace. See | |
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| wiring diagram. | |
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| 5. | The input contactor coil may | |
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| be open. See wiring diagram. | |
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| 6. | The Control board may be | |
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| faulty - Replace. | |
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Input contactor (1CR) chatters. | 1. | The input line voltage may be | 1. | The pilot relay (2CR) may | ||
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| low. Check all three phases. |
| have bad contacts. Check or | |
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| replace relay. | |
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| 2. Make sure input line voltage |
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| matches machine rating and | 2. | Check for loose or faulty | |
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| reconnect panel. |
| wiring between pilot relay | |
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| (2CR) and input contactor | |
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| (1CR) | coil connections. |
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| 3. | The input contactor (1CR) | |
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| may be | faulty - Replace. |
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CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call
